GitHub - cristibaluta/Imagin-Raw: A lightweight but powerful alternative to Adobe Bridge for Mac

GitHub

4 min read Original article ↗

A lightweight, native macOS application for browsing, culling, and organizing RAW photos - built as a more efficient alternative to Adobe Bridge.

Main Interface

Architecture

  • UI: SwiftUI (macOS 14.6+, I might try to support even lower if people need it). AppKit/UIKit for the thumbnails list where SwiftUI performance was poor
  • RAW decoding: LibRaw (C++), wrapped via Objective-C++ bridge. CoreImage also used for other formats and as a fallback
  • Metadata: EXIF parsed directly from RAW/JPEG binary structures; XMP sidecars read/written for Lightroom/Bridge compatibility
  • File system monitoring: FSEvents for real-time folder change detection
  • Search: NSMetadataQuery (Spotlight engine) for indexed file/folder search
  • Concurrency: Swift6 compliant, a mix of Tasks, OperationQueue, unchecked Sendables

Features

  • Multi-root folder browsing - add any number of folders from local disks, external drives, or SD cards; no import step, no managed library
  • Real-time file system monitoring - new photos, deletions, and folder structure changes are detected and reflected immediately
  • Supported files - all the RAWs and images known to macOS, plus svg and Affinity
  • Rating and color labeling - written to XMP sidecars (RAW) or embedded directly into the file without re-encoding (JPEG/HEIC), compatible with Adobe Bridge and Lightroom
  • Rejection workflow - a session-scoped label (not persisted across folder changes) for marking photos to delete; batch-delete via right-click
  • JPG/RAW pair deduplication - when a RAW+JPEG pair exists, only the RAW is shown in the grid
  • Two grid layouts - compact grid (more room for preview) and large grid (more room for thumbnails)
  • Spotlight-backed search - search across files and folder names using the macOS indexing engine
  • SD card ingest - copy photos into date-based folder structures, with optional simultaneous backup to a second destination
  • Duplicate/similar photo detection - Review mode for quickly resolving near-duplicate burst shots
  • Instagram frame export - frame 2:3 images into a 3:4 canvas, exported as TIFF to avoid re-encoding loss (useful for Camera Raw edits which cannot add frames)
  • Export video - select multiple photos from the same sequence and export a cool video
  • Offline client proofing - export PDF -> client ticks some checkboxes to mark his favourites -> import the PDF back to filter the selected photos

Comparison with Adobe Bridge (2022 version)

Where Imagin RAW is better

Imagin RAW Bridge
App size ~9 MB ~2 GB
Idle CPU 0% 1-2%
Memory 200MB to scroll through 1300 thumbnails 2GB for the same album
Memory release Released when switching albums Adds up when switching albums
Launch time Instant Seconds
Scrolling Native, smooth Row-by-row, hard to control
External drive eject No app restart needed (unless video selected) Requires quitting Bridge

Where Bridge is better

  • Camera Raw–processed previews - Bridge renders thumbnails with ACR adjustments applied. Imagin RAW currently shows the embeded jpegs in a raw; replicating the ACR pipeline isn't feasible, although basic adjustments and crop will be explored.

Roadmap

  • See the open Issues
  • An iOS version as an alternative to the cluttered Photos app is in development.

Screenshots

Filtered Thumbnails Thumbnail Grid Thumbnail Grid

Keyboard Shortcuts

  • Arrow Keys - Navigate between photos
  • CMD A - Select all photos
  • CMD Click / Shift+Click - Multi-select photos
  • CMD Del - Move photos to trash
  • CMD Z - Undo photos moved to trash
  • 1-5 - Set Star Rating
  • 6-0 - Apply Labels
  • - - Remove label
  • A - Approve photos (same as the 8 key)
  • X / Del - Reject photos
  • OPT 1-5 - Filter by Star Rating
  • OPT 6-0 - Filter by Labels
  • OPT X - Filter by Rejected
  • C - Toggle Sidebar
  • G - Toggle Grid Type
  • Z - Toggle Zoom
  • Return - Open selected photo(s) in external editor

System Requirements

  • macOS 14.6 or later
  • Apple Silicon or Intel processor

Installation

  • Buy from the AppStore if you want to support the project and receive updates automatically
  • Download the latest release from Releases. The app does not update itself and does not announce you for updates either
  • Compile from source code, there should be no surprises

Contributions

  • Reporting issues and ideas are welcome.
  • The code faces multiple random refactorings right now, not the best time to contribute with code.